<?php  
namespace app\api\validate;

use app\lib\exception\ParameterException;
use think\Exception;

class OrderPlace extends BaseValidate{

    protected $rule = [
        'products' => 'checkProducts'
    ];

    protected $singleRule = [
        'product_id' => 'require|isPositiveInteger',
        'count' => 'require|isPositiveInteger',
    ];

    protected function checkProducts($values){
        if(empty($values)){
            throw new ParameterException([
                    'msg' => '商品列表不能为空'
                ]);
        }

        if(!is_array($values)){
            throw new ParameterException([
                    'msg' => '商品参数不正确，必须是数组'
                ]);
        }

        foreach ($values as $value){
            $this->checkProduct($value);
        }
        return true;
    }

    private function checkProduct($value){

        $validate = new BaseValidate($this->singleRule);
        $result = $validate->check($value);
        if(!$result){
            throw new ParameterException([
                'msg' => '商品列表参数错误',
            ]);
        }
    }
}

?>